News Release Number: STScI-2009-03

Hubble Finds Stars That 'Go Ballistic'

January 7, 2009: Resembling comets streaking across the sky, these four speedy stars are plowing through
regions of dense interstellar gas and creating brilliant arrowhead structures and trailing tails
of glowing gas. The stars in these NASA Hubble Space Telescope images are among 14
young runaway stars spotted by the Advanced Camera for Surveys between October 2005
and July 2006. The images will be presented today at the American Astronomical Society
meeting in Long Beach, Calif.